/* 卡片样式 */
.card {
  width: 100%;
  margin-bottom: 10px;
  background: white;
  border-radius: 16px;
  box-shadow: 0 3px 10px rgba(0,0,0,0.07);
  padding: 20px;
  box-sizing: border-box;
  overflow: hidden;
}

.card-title {
  font-size: 22px;
  font-weight: 700;
  color: #2d2d2d;
  margin-bottom: 18px;
  padding-bottom: 8px;
  border-bottom: 1px solid #f0f0f0;
}

.card-content {
  color: #444;
  font-size: 18px;
  line-height: 1.8;
  text-indent: 2em;
}

/* 功能按钮样式 */
.function-item {
  text-align: center;
  flex: 1;
  background-color: #f5e6c7;
  border-radius: 16px;
  height: 100%;
  margin: 0 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: #333;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  transition: all 0.3s ease;
}

.function-item:active {
  transform: scale(0.98);
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}

/* 响应式字体 */
@media (min-width: 375px) {
  .function-item {
    font-size: 22px;
  }
  .card-title {
    font-size: 24px;
  }
  .card-content {
    font-size: 19px;
  }
}

@media (min-width: 414px) {
  .function-item {
    font-size: 24px;
  }
  .card-title {
    font-size: 26px;
  }
  .card-content {
    font-size: 20px;
  }
}